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# ul
> 执行文本的下划线。
> 给定字符串中的每个字符必须单独加下划线。
> 更多信息：<https://manned.org/ul>.
- 在适用的情况下用下划线显示文件的内容：
`ul {{文件路径}}`
- 用由破折号组成的下划线显示文件的内容 `-`：
`ul -i {{文件路径}}`